Add CI test for PPC64LE backend

Signed-off-by: Hanno Becker <[email protected]>

Author: hanno-becker

.github/actions/multi-functest/action.yml

@@ -119,7 +119,7 @@ runs:
           nix-verbose: ${{ inputs.nix-verbose }}
           gh_token: ${{ inputs.gh_token }}
           custom_shell: ${{ inputs.custom_shell }}
-          cflags: "${{ inputs.cflags }} -DMLK_FORCE_PPC64LE"
+          cflags: "${{ inputs.cflags }} -DMLK_FORCE_PPC64LE -mvsx"
           cross_prefix: powerpc64le-unknown-linux-gnu-
           exec_wrapper: qemu-ppc64le
           opt: ${{ inputs.opt }}

.github/workflows/ci.yml

@@ -134,23 +134,33 @@ jobs:
     runs-on: ${{ matrix.target.runner }}
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - name: build + test
+      - name: build + test (no-opt)
         uses: ./.github/actions/multi-functest
         with:
           nix-shell: ${{ matrix.target.nix_shell }}
           nix-cache: ${{ matrix.target.mode == 'native' && 'false' || 'true' }}
           gh_token: ${{ secrets.GITHUB_TOKEN }}
           compile_mode: ${{ matrix.target.mode }}
-          # There is no native code yet on PPC64LE, R-V or AArch64_be, so no point running opt tests
-          opt: ${{ (matrix.target.arch != 'ppc64le' && matrix.target.arch != 'riscv64' && matrix.target.arch != 'riscv32' && matrix.target.arch != 'aarch64_be') && 'all' || 'no_opt' }}
-      - name: build + test (+debug+memsan+ubsan)
+          opt: 'no_opt'
+      - name: build + test (+debug+memsan+ubsan, native)
         uses: ./.github/actions/multi-functest
         if: ${{ matrix.target.mode == 'native' }}
         with:
           gh_token: ${{ secrets.GITHUB_TOKEN }}
           compile_mode: native
           cflags: "-DMLKEM_DEBUG -fsanitize=address -fsanitize=undefined -fno-sanitize-recover=all"
           check_namespace: 'false'
+      - name: build + test (+debug, cross, opt)
+        uses: ./.github/actions/multi-functest
+        # There is no native code yet on riscv64, riscv32 or AArch64_be, so no point running opt tests
+        if: ${{ matrix.target.mode != 'native' && (matrix.target.arch != 'riscv64' && matrix.target.arch != 'riscv32' && matrix.target.arch != 'aarch64_be') }}
+        with:
+          nix-shell: ${{ matrix.target.nix_shell }}
+          nix-cache: ${{ matrix.target.mode == 'native' && 'false' || 'true' }}
+          gh_token: ${{ secrets.GITHUB_TOKEN }}
+          compile_mode: ${{ matrix.target.mode }}
+          cflags: "-DMLKEM_DEBUG"
+          opt: 'opt'
   backend_tests:
     name: AArch64 FIPS202 backends (${{ matrix.backend }})
     strategy: